MDCAT Biology MCQ #342

ATP provides energy for cellular work by transferring a phosphate group. Which specific bond is broken to release 7.3 kcal/mol of energy?

MDCAT Biology MCQ #342

  1. Question 1

    Q1. ATP provides energy for cellular work by transferring a phosphate group. Which specific bond is broken to release 7.3 kcal/mol of energy?

    • A) Adenine-Ribose bond
    • B) Ribose-Phosphate bond
    • C) Inner Phosphate-Phosphate bond
    • D) Terminal Phosphate-Phosphate bond

    Answer: Terminal Phosphate-Phosphate bond

    Explanation: Breaking the terminal phosphate-phosphate phosphoanhydride bond releases 7.3 kcal/mol. The ribose-phosphate bond is wrong because it is a lower-energy ester bond.